Which option describes what happens if a Voice over LTE IMS client attaches to an LTE EPC?
A. A default bearer is established in IMS APN.
B. A dedicated bearer is established in IMS APN.
C. A default bearer and a dedicated bearer are established in IMS APN.
D. No EPC bearer is established in IMS APN at this stage.
In which two ways is P-CSCF discovered by the Voice over LTE IMS client? (Choose two.)
A. Retrieve the list of P-CSCF information that is stored locally on the IMS client.
B. Obtain P-CSCF information from other registered IMS clients.
C. Retrieve the list of P-CSCF information from the Mobility Management Entity.
D. Obtain P-CSCF information in the protocol configuration options during bearer context activation.
E. Obtain P-CSCF information from the Telephony Application Server during IMS registration.
Which network function converts Voice over LTE voice bearer to PSTN voice bearer?
A. border gateway control function
B. media gateway function
C. multimedia resource function
D. session border controller function
Which Diameter command is used when P-CSCF sends the desired uplink and downlink bandwidth information to the PCRF?
A. RAR
B. AAR
C. CCR
D. MAR
Which protocol runs on the 3GPP Rx interface?
A. GTPv2
B. SS7
C. RADIUS
D. Diameter
E. SIP
Which two options are valid Diameter command messages that can be seen on the 3GPP Cx interface? (Choose two.)
A. RAR
B. AAR
C. MAR
D. PLR
E. SAA
F. CCA
Which option is a network entity that can mix multiple Voice over LTE call bearers into a conference call?
A. Media Resource Function
B. Media Gateway
C. Mobile Switching Center
D. Packet Data Network Gateway
Which option describes how PCRF knows the amount of QoS that is needed for a Voice over LTE call?
A. PCRF obtains the bandwidth information over the Sy interface.
B. PCRF obtains the bandwidth information over the Rx interface from P-CSCF.
C. PCRF obtains bandwidth information from the TAS.
D. PCRF has the all the bandwidth information always hard-coded in its configuration.
Which two options are two functions of a proxy CSCF? (Choose two.)
A. a SIP registrar that is responsible for session management
B. an entity in IMS that connects with the ENUM server for the number portability function
C. a SIP proxy node that acts as a signaling entry point into IMS
D. an entity in IMS that works on both signaling and bearer domain
E. an entity in IMS that connects with PCRF via the Rx interface
F. an entity in IMS that interacts with application servers
Which option describes the function of ENUM in Voice over LTE?
A. It converts SIP URI to Telco URI.
B. It is used for the call forwarding service.
C. It assigns a telephone number to an IMS UE.
D. It generates a query in the e164.arpa domain.
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